Hematologist-Oncologist · Colorado
Complex medical science,
explained clearly.
I'm Dr. Kelly Casteel — a hematologist-oncologist who helps patients and clinicians understand blood disorders and cancer medicine, accurately and humanely.
Interactive explainers
How treatment actually evolved, trial by trial.
Interactive timelines across blood disorders and cancers, each built from primary literature, ClinicalTrials.gov, and FDA records. Browse all explainers →
Four Decades of Myeloma Therapy
From melphalan to CAR-T — the trials that turned a two-year prognosis into a livable disease.
Open the timeline CLL / SLLCLL/SLL Treatment Timeline
The shift from chemotherapy to targeted, chemo-free care, mapped trial by trial.
Open the landscape AnticoagulationThe Anticoagulation Arc
From heparin to the Factor XI inhibitors — a century of thinning blood, safely.
Open the timelineWho I write for
Two audiences, one standard of clarity.
♥ Patients & families
A new diagnosis comes with a frightening vocabulary. I translate it — plain language first, honest about what we know and what we don't, never hype. Understanding your disease is the first step to facing it.
✦ Clinicians & trainees
The same explainers, with the receipts. Sourced to primary trials and regulatory records, built to be a fast, rigorous refresher on how today's standards of care came to be.
A focused practice
The Iron Doctor
Colorado's home for iron disorders — iron deficiency, iron overload, and the anemia workups that get missed. Clear answers and specialist care, in Longmont and by telemedicine.
Visit The Iron Doctor